Need this software urgently please

hello , Hello, I will sell my pc so I must remove the traces that remain in the Hard disk someone know a software that allows to eradicate traces from the PC and make the hard disk clean?
Answer #1
try nuke its on forum here or of course you could try the search for others http://www.google.com?t=2342887&highlight=
Answer #2
In addition to suggestion..Hiren’s BootCD>Hard Disk Tools:
Active Kill Disk 4.1
Securely overwrites and destroys all data on physical drive.
Answer #3
try nuke its on forum here or of course you could try the search for others http://www.google.com?t=2342887&highlight=
I’d suggest that aswell.